The endoplasmic reticulum is the place of synthesis of antibodies. Folding and assembly of those complex disulfide bonded proteins is of great importance for higher eukaryotes. Many folding helpers are involved directly or indirectly in the folding of antibodies. PDI´s are essential for formation and isomerisation of disulfides, Hsp70- and Hsp90-homolges, BiP and Grp94 prevent aggregation. Further, those proteins are supported by a number of interaction partners. In this work a cell-free on E. coli based expression system the synthesis of a complete IgG was established. Moreover the influence of different ER-resident folding helpers was characterised with a view on the refolding of the fab-fragment, and Grp94 was investigated structurally and functionally.
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The endoplasmic reticulum is the place of synthesis of antibodies. Folding and assembly of those complex disulfide bonded proteins is of great importance for higher eukaryotes. Many folding helpers are involved directly or indirectly in the folding of antibodies. PDI´s are essential for formation and isomerisation of disulfides, Hsp70- and Hsp90-homolges, BiP and Grp94 prevent aggregation. Further, those proteins are supported by a number of interaction partners. In this work a cell-free on E. c...
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